Installation process for precast reinforced concrete heavy duty retaining wall

ABSTRACT

A retaining wall installation process for earth and water retaining wall, first step starting from preparing precast reinforced concrete heavy duty retaining wall ( 1 ) on the ground, inserted horizontal rebars ( 12 ) at each fin ( 7 ) passed to the holes ( 8 ), connected mechanical couplers ( 14 ) only one end of horizontal rebars. Attached shuttle-platform ( 16 ) to precast reinforced concrete heavy duty retaining wail ( 1 ). Then lift up to installed the wall at construction site, put down the vertical rebars ( 15 ) connected to the lower vertical rebars by using mechanical couplers ( 14 ), tie vertical rebars to horizontal rebars, then closed the vertical cavities ( 24 ) by using panel closer ( 28 ) and poured fresh concrete ( 29 ). After final setting time, removed shuttle-platform down to the ground.

TECHNICAL FIELD

The present invention pertains generally to retaining walls.Specifically, the invention related to installation process for acompletely precast reinforced concrete heavy duty retaining wall of thetype typically used along the earth and water retaining wall.

BACKGROUND ART

Precast reinforced concrete heavy duty retaining wall WO/2018/160143this innovations modified from Precast reinforced concrete walls H shapeWO/2015199622. The purpose of these invented needs to develop thetraditional construction and the construction the walls now a day arecast—in—place or cast in situ.

Changed to the new constructing methods from cast in place or cast insitu to precast walls, which is to inserted steel reinforcement, doesnot used form works and scaffolding entirely. The real disadvantage ofcast—in—place or cast in situ is the high amount of labor, it is usingvastly of cast—in—place or cast in situ is the high amount of labor, itis using vastly of construction materials such as form work andscaffolding, erection of form work is a time consuming, concrete mustcure before it is not loaded, quality controls of finish is not assured,and the climate create problem for curing and construction itself, thelabor is problem.

The advantages of precast concrete retaining walls, who having manybenefits, such as using precast concrete walls should be saved budget byreducing the time spent on the project and by being less expensive thanmany construction materials. Precast concrete should be cast in factory,using the same molds over and over, it is easy to maintain uniformity,and quality checked before going the job site. The installation shouldlift by crane. Saving time no time is wasted forming, framing, pouringor curing, which is the project can begin right away.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view of Precast reinforced concrete heavy dutyretaining wall.

FIG. 2 is a cross sectional view of Precast reinforced concrete heavyduty retaining wall, shown the steel rebars reinforcement.

FIG. 3 is a perspective view of shuttle-platform attach to the PrecastReinforced concrete heavy duty retaining wall.

FIG. 4 is a perspective view of Precast reinforced concrete heavy dutyretaining wall and shuttle-platform lift up by multi-leg webbings.

FIG. 5 is a perspective view of Precast reinforced concrete heavy dutyretaining wall seated on Foundation.

FIG. 6 is a top view of a pair of Precast reinforced concrete heavy dutyretaining wall laid in row.

FIG. 7 is a perspective view of Precast reinforced concrete heavy dutyretaining wall installation, shown steel bar reinforcement followingFIG. 6

FIG. 8 is a perspective view of Precast reinforced concrete heavy dutyretaining wall, shown tie rod used between double walls.

FIG. 9 is a front view of Precast reinforced concrete heavy dutyretaining wall shown tie rod and tie-precast reinforced concrete beaminstalled between double walls.

FIG. 10 is a perspective view of shuttle-platform shown detailsstructures.

DISCLOSURE OF THE INVENTION

As shown in FIG. 1 is a Precast reinforced concrete heavy duty retainingwall (1), having a face panel (2), precast reinforced wall comprising asubstantially length and height (3) are square wall panel, in whichhaving wall thickness (4), the upper surface having notch (5), and thecenter line of wall thickness (4) for male Interlocking, the leftsurface, the right surface and lower surface at three places havinggrooves (6) located at the center line of wall thickness (4) allsections, sizes, and configurations of grooves (6) are substantiallyequally, and the lower groove (6) of the upper precast reinforcedconcrete heavy duty retaining wall (1) could be seated firmly on thelower notch (5).

There are four fin (7) at the right hand side homogeneous with the rearof wall thickness (4) each fin having holes (8) And the right hand sideof each fin (7) having regular octagon column (9) homogeneous with fins(7), the center of upper surface of outer left and outer right ofregular octagon columns (9) having protrude male Interlocking (10), andthe center of lower surface in opposite direction having femaleInterlocking (11) could be worn with protrude male Interlocking (10)firmly.

As shown in FIG. 2 is a sectional view shown the rear view of Precastreinforced concrete heavy duty retaining wall (1). First step, preparingthe rear face of Precast reinforced concrete heavy duty retaining wall(1) on the ground, by prepared the horizontal rebar, length of them areequal to the length and height (3) of Precast reinforced concrete heavyduty retaining wall (1), inserted horizontal rebars passed to the holes(8) of each fin from left to right or from right to left, the horizontalrebars (12) should be laid not less than three layers, then inserted apair of washer (13) passed to the horizontal rebars, attached inopposite sides of each fin (7) and on outer left and outer right, weldedbetween washer to horizontal rebars. (12).Connected mechanical couplers(14) only one end of each horizontal rebar. On work site, put thevertical rebars (15) from upper connected to the lower vertical rebars(15) by using mechanical couplers (14), in which all mechanical couplers(14) are on the upper end of each vertical rebar. Then tie verticalrebars to horizontal rebars (12) by using tying machine.

As shown in FIG. 3 is a perspective view shown shuttle-platform (16)attached to Precast reinforced concrete heavy duty retaining wall (1) atthe rear face panel (17) of each regular octagon column (9) fasten boltsnot less than four points at each rear face panel (17) of the regularoctagon columns (9).

As shown in FIG. 4 is a perspective view of Precast reinforced concreteheavy duty retaining wall (1) attached with shuttle-platform (16) byfastened bolts. Prepare to lift up by using multi-leg webbings (19) andhaving eye slip hook (20) clamps to a pair of the upper most horizontalrebars (1) in opposites direction between each fin, then lift up toinstalled on the wall at work site.

As shown in FIG. 5 is a perspective view of Precast concrete heavy dutyretaining wall (1) the first step seated on the foundation (21) withoutshuttle-platform (16). The foundation having straight curb (22) forattached the face panel (2) of Precast reinforced concrete heavy dutyretaining wall (1). The foundation having protrude vertical rebars (23)then connected vertical rebars (15) to protrude vertical rebars (23) byusing mechanical couplers (14) and tied vertical rebars (15) tohorizontal rebars (12) by tying machine.

As shown in FIG. 6 and FIG. 7 are the top plan view and perspective viewof Precast reinforced concrete heavy duty retaining wall (1). Afterinstalled first Precast reinforced concrete heavy duty retaining wall(1), as shown in FIG. 5 completely. Then lift the second Precastreinforced concrete heavy duty retaining wall (1) down to seated on thefoundation in row, adjacent to the first retaining wall ,connected toeach horizontal rebar between first Precast reinforced concrete heavyduty retaining wall (1) to second Precast reinforced concrete heavy dutyretaining wall (1) by using mechanical couplers (14). The verticalcavity (24) between a pair of Precast reinforced concrete heavy dutyretaining wall (1) should be installed steel reinforcement column (25)at each column, and should be connected tie-precast reinforced concretebeam (26) for double walls. Fill in grout into the narrow hole (27), putthe vertical rebars down to connected with lower vertical rebars byusing mechanical couplers (14), then closed the vertical cavity (24) bypanel closer (28) then poured fresh concrete (29) to each verticalcavity (24) during setting time not less than 10 hours. Later timeremoves panel closer (28) out, took out shuttle -platform from eachPrecast reinforced concrete heavy duty retaining wall (1) lift down tothe ground, and prepared to the next step of installation.

As shown in FIG. 8 is a perspective view of precast reinforced concreteheavy duty retaining wall (1) shown tie rod assembly (30) are used forstretching between double Precast reinforced concrete heavy dutyretaining walls (1) which is this tie rod assembly (30) having internalRH threaded rod (31) embedded in the rear face panel (17) of doublewalls in opposite sides and same level of regular octagon column (9) ineach rear face panel (17) having internal RH threaded rod (31) not lessthan four places. And at right hand side having deform bar (32) in whichright end is external RH threaded connected with internal RH thread rod(30) and the left end is external LH threaded. Likewise the left handside having deform bar (32) the left end is external RH thread connectedwith internal RH thread rod (30) and the right end is external LH threadrod (33) connected with turn buckle (34) the length of turn buckle notless than five times of the diameter of deform bar (32). And the leftend of deform bar (32) connected with turn buckle (34).

As shown in FIG. 9 is the front view of double walls of precastreinforced concrete heavy duty retaining walls (1) installed on the lefthand side and precast reinforced concrete heavy duty retaining wall (1)installed on the right hand side, all of these are seated on thefoundation and should be connected with tie-precast reinforced concretebeam (26) stretching between the left and right of Precast reinforcedconcrete heavy duty retaining wall (1) the right hand side, eachtie-precast reinforced concrete beam (26) should be connected with eachsteel reinforcement column. And having tie rods assembly (31) connectedwith internal RH thread rod (31) between double precast reinforcedconcrete heavy duty retaining walls (1).

As shown in FIG. 10 is a perspective view of shuttle platform (16) hasshown in FIG. 3 . The structure of Shuttle-platform consisted ofplurality of steel structure, and having two floors, first floor (35)and second floor (36), each floor are none metallic material, the highof first floor (36) to second floor (36) not less than two thirds oflength and height (3). The height (37) of shuttle-platform (16) is equalto the length and height (3). The width (38) of shuttle-platform (16)not less than two thirds of length and high (3). Having stair (39) forclimbed of work man the position is at the center of length ofshuttle-platform (16). The lifting point (40) having four points on thehand rail (41) of second floor (36), and the upper of steel channels(42) connected with attaching assy (43) press on the upper surface ofregular octagon columns.

1. The installation process for precast reinforced concrete heavy dutyretaining wall comprising: precast reinforced concrete heavy dutyretaining wall, comprising a substantial length and height are squarewall panel, having notch for male Interlocking, the right surface, theleft surface, and the lower surface, having grooves, a groove of lowersurface should be seated on the notch male Interlocking firmly. theright hand side having four fin, homogeneous with wall panel, each finhaving several hole, using for inserted horizontal rebars, the righthand side of each fin having regular octagon column, which homogeneouswith fins, the center of upper surface of outer left and outer right ofregular octagon columns, having protrude male Interlocking, and thecenter of lower surface having female Interlocking, should be worn toprotrude male Interlocking firmly.
 2. The precast reinforced concreteheavy duty retaining wall of claim 1, wherein said the installationprocess, the first step began on the ground by preparing the horizontalrebars, length of them are equal to the length of precast reinforcedconcrete heavy duty retaining wall, inserted horizontal rebars passingto the holes of each fin, should be laid not less than three layers, andinserted a pair of washer passed to the horizontal rebars, attached inopposite sides of each fin , welded between washer to horizontal rebars,connected mechanical couplers only one end of each horizontal rebar. 3.The precast retaining wall in claim 1, wherein said havingshuttle-platform attached to precast reinforced concrete heavy dutyretaining wall at the rear face panels of each regular octagon column,fasten bolts not less than four points at each rear face panel, andconnected attaching Assy, to four steel channels.
 4. The precastretaining wall in claim 3, wherein said preparing to lift up precastreinforced concrete heavy duty retaining wall by using multi-legwebbings, and at the end of webbings having eye slip hook, clamps to apair of upper most of horizontal rebars in opposite side between fin,then lift up to installed the wall at the construction site.
 5. Theprecast retaining wall of claim 3, wherein said lift down precastretaining wall to seated on the foundation without shuttle-platform, thefoundation having straight curb. Put down the vertical rebars from theupper matching with lower protrude rebars, connected by using mechanicalcouplers, and tie vertical rebars to horizontal rebars by using tyingmachine.
 6. The precast retaining wall of claim 5, wherein said secondprecast reinforced concrete heavy duty retaining wall, lifted down toseated adjacent to the first precast retaining wall, connected eachhorizontal rebars by using mechanical couplers, fill in grout to thenarrow hole, put the vertical rebars down to connected to the lowervertical rebars by using mechanical couplers, closed the vertical cavityby using panel closer, and poured fresh concrete to each vertical cavityof precast retaining wall, after final setting time, removed each panelcloser , took out shuttle-platform, and lift down to the ground.
 7. Theprecast retaining wall of claim 6, wherein said the vertical cavityarising from connections between double precast reinforced concreteheavy duty retaining wall in row, should be installed steelreinforcements column, and the position of steel reinforcement column,should be connected tie-precast reinforced concrete beam, connectedbetween double walls in opposite sides.
 8. The precast retaining wall ofclaim 7, wherein said the installation of tie rod assembly should bestretching between double walls of precast retaining wall, tie rodassembly comprising (Number 1) internal RH thread rod, having two piecesembedded in a pair of rear face panel in opposite sides, left side of(Number 1) internal RH thread rod, having (Number 2) deform bar, theright end and left end of deform bar are RH threaded, connected to(Number 1) internal RH thread rod, and the left end connected to the(Number 3) turn buckle, the left hand of turn buckle is (Number 4)deform bar, which is the right end is LH thread connected to turn buckleand the left end is RH threaded connected to the last (Number 1)internal RH thread rod.
 9. The precast retaining wall of claim 3,wherein said shuttle-platform consist of plurality of steel structure,the length of Shuttle-platform not more than the length of precastreinforced concrete heavy duty retaining wall, the high from first floorto second floor not less than two thirds of length, the floors are nonemetallic material, the high of Shuttle-platform not included theattaching assembly, is equal to the high of precast reinforced concreteheavy duty retaining wall, the width of Shuttle-platform is not lessthan two thirds of height, having stair located at the center of length,lifting point having four points on the hand rail of second floor, upperof steel channels of Shuttle-platform, connected with attaching assemblyusing for pressed the area on the upper surface of regular octagoncolumns at four places.